Minecraft has crashed!
      ----------------------

Minecraft has stopped running because it encountered a problem.

If you wish to report this, please copy this entire text and email it to support@mojang.com.
Please include a description of what you did when the error occured.



--- BEGIN ERROR REPORT a1dce528 --------
Generated 10/21/10 6:48 PM

Minecraft: Minecraft Alpha v1.1.2_01
OS: Windows XP (x86) version 5.1
Java: 1.6.0_21, Sun Microsystems Inc.
VM: Java HotSpot(TM) Client VM (mixed mode), Sun Microsystems Inc.
LWJGL: 2.4.2
OpenGL: Radeon X1300/X1550 Series version 2.1.8543 Release, ATI Technologies Inc.

java.lang.RuntimeException: Failed to check session lock, aborting
	at cn.<init>(SourceFile:168)
	at cn.<init>(SourceFile:144)
	at net.minecraft.client.Minecraft.b(SourceFile:1110)
	at jq.c(SourceFile:68)
	at jq.a(SourceFile:54)
	at bh.a(SourceFile:69)
	at bh.e(SourceFile:115)
	at bh.d(SourceFile:103)
	at net.minecraft.client.Minecraft.i(SourceFile:953)
	at net.minecraft.client.Minecraft.run(SourceFile:589)
	at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT 2b74704d ----------